#include <bits/stdc++.h>
using namespace std;

int main() {
  int n;
  string s;
  cin>>n>>s;
  string t;
  for (int i=0;i<n;i++) {
    t.push_back(s[i]);
    if (s[i]=='n') {
      t.push_back(s[i]);
    }
  }
  s=t;
  reverse(s.begin(),s.end());
  vector<string> ok_={"aw","ow","nn"},ok;
  for (int i=0;i<3;i++) {
    for (int j=0;j<1<<2;j++) {
      string str;
      for (int k=0;k<2;k++) {
        if (j>>k&1) {
          str.push_back(ok_[i][k]);
        }
        else {
          str.push_back('?');
        }
      }
      ok.push_back(str);
    }
  }
  while (s.size()>=2) {
    string str=s.substr(s.size()-2,2);
    if (count(ok.begin(),ok.end(),str)) {
      s.pop_back();
      s.pop_back();
    }
    else {
      break;
    }
  }
  cout<<(s.size()==0?"Yes":"No")<<endl;
}